mirror of
https://github.com/reactos/reactos.git
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163 lines
2.5 KiB
C++
163 lines
2.5 KiB
C++
/* PROJECT: ReactOS sndrec32
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* LICENSE: GPL - See COPYING in the top level directory
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* FILE: base/applications/sndrec32/audio_format.hpp
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* PURPOSE: Audio format abstraction
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* PROGRAMMERS: Marco Pagliaricci (irc: rendar)
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*/
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#ifndef _AUDIOFORMAT__H_
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#define _AUDIOFORMAT__H_
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#include "audio_def.hpp"
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_AUDIO_NAMESPACE_START_
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class audio_format
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{
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protected:
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unsigned int samples_psec;
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unsigned short int bits_psample;
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unsigned short int chan;
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public:
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//
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// Ctors
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//
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audio_format( unsigned int samples_per_second,
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unsigned short int bits_per_sample, unsigned short int channels )
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: samples_psec( samples_per_second ), bits_psample( bits_per_sample ),
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chan( channels )
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{ }
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//
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// Dtor
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//
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virtual ~audio_format( void )
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{ }
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//
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// Operators
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//
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bool operator==( audio_format & eq ) const
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{
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//
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// The same audio format is when samples per second,
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// bit per sample, and channels mono/stereo are equal.
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//
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return (( samples_psec == eq.samples_psec )
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&& ( bits_psample == eq.bits_psample ) && ( chan == eq.chan ));
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}
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//
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// Public Functions
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//
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unsigned int sample_rate( void ) const
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{ return samples_psec; }
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unsigned short int bits( void ) const
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{ return bits_psample; }
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unsigned short int channels( void ) const
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{ return chan; }
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unsigned int byte_rate( void ) const
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{ return ( samples_psec * chan * ( bits_psample / 8 )); }
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unsigned int block_align( void ) const
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{ return ( chan * ( bits_psample / 8 )); }
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unsigned int samples_in_seconds( float seconds ) const
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{
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return ( unsigned int )
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((( float )samples_psec * ( float ) chan ) * seconds );
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}
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unsigned int samples_in_bytes ( unsigned int bytes ) const
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{
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return ( bytes / (( bits_psample / 8 ) * chan ));
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}
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unsigned int bytes_in_samples( unsigned int samples ) const
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{
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return ( samples * (( bits_psample / 8 ) * chan ));
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}
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};
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extern audio_format UNKNOWN_FORMAT;
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extern audio_format A44100_16BIT_STEREO;
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extern audio_format A44100_16BIT_MONO;
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_AUDIO_NAMESPACE_END_
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#endif //ifdef _AUDIOFORMAT__H_
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